The KWM-1 covers the frequency range of 14-30 mc with an input of 175 watts PEP or SSB. In addition to SSB emission it also utilizes the VOX circuits for break-in CW operation with a built-in monitor.

The Collins KWM-1 was a breakthrough SSB/CW transceiver introduced in 1957, is considered an engineering marvel. It covered 14-30mc in 100kc segments, VOX and CW break-in, and 100 watt output all in a compact package capable of fixed station or mobile.

Last modified 2023-01-19 Collins KWM-1 SPECIFICATIONS. GENERAL: Type: Amateur HF transceiver: Frequency range: 10-20 m Tuning steps: Continuous: Frequency stability: ±? ppm: Mode: SSB / CW: Channels / memory management: Repeater shift / offset: No: Power supply:

NEW and FIRST – that’s the best description of the revolutionary KWM-1, the first mobile transceiver and the first to offer SSB. And this 14-30 mc 200 Watt package is equally adaptable to fixed use with simple removal from a convenient mounting tray under the dashboard.

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The Collins KWM-1 is the first amateur band transceiver designed for mobile and fixed station applications. Final amplifier plate input power is 175 watts PEP on SSB or 160 watts on CW. A crystal plug-in unit allows for the selection of ten crystal positions, each covering a 100 kc segment in the frequency range of 14 to 30 Mc.

The KWM-1 led to the eventual demise of separate receivers and transmitters in ssb shortwave communications. The Collins KWM-2 transceiver (left) was the wildly popular successor to the ugly duckling KWM-1. This is the "A" version, which signifies extended frequency coverage.

Collins KWM-1 Transceiver: covers ten 100 kHz segments in the range of 14 - 30 MHz resp. 15 - 10 m ham bands; SSB (175 W PEP input) / CW (160 W PEP input). Intended primarily for mobile operation, needs external power supply (several availible).

In the August 1957, just as the KWM-1 was reaching retailers, Hallicrafters presented a full-page QST advertisement announcing its FPM-200, an even more ambitious transceiver than the Collins design. The FPM-200 had two VFOs, covered 80 through 10 meters and was mostly solid-state. Hallicrafters struggled with the FPM-200 over the next three

the KWM-2. Accessories. Please check our Used List Discontinued Amateur Transceivers Larger View | The Collins KWM-1 is a high quality amateur band transceiver featuring CW, LSB and USB modes. It operates in the 14 to 30 MHz range in 100 kHz …